Combined forms of epileptic seizures are known to require combinations of antiepileptic drugs for their management. This study investigated the effects of such a combination consisting of phenobarbital and carbamazepine (mixed in the 1:4 ratio) as well as the effects of each component used separately on the Corazol-induced bioelectrical brain discharges. The effects were studied in a group of rats that received only a single dose of the drugs, as well as in a group that underwent 14-day anticonvulsant treatments. The bioelectric activity of the brain was recorded using an EEG method. In a single dosage, the combination of phenobarbital and carbamazepine was found to be more effective than its components. The decrease of Corazol-induced discharges was more pronounced in a single administration of the combination than when it was applied repeatedly. Development of a cumulative effect was observed in respect to carbamazepine action on the Corazol-induced discharges.
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